Three species M, N and O when grown independently in a laboratory, showed typical logistic growth curves. However, when grown in pairs, the following growth curves were observed. What interpretation […]
Category: CSIR NET Life Science Previous Year Questions and Solution on Ecology
CSIR NET Life Science Previous Year Questions and Solution on Ecology
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
Maximum BOD and Minimum DO for Pure Drinking Water: Standards and Importance
The maximum BOD and minimum DO for pure drinkingwater should be (1) 25, 5 (2) 2, 5 (3) 3, 9 (4) 0, 6 Ensuring the safety and quality of drinking […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
How Refuges Affect Prey Survival: The Didinium–Paramecium Predator-Prey Experiment
To understand prey-predator relationship, Didinium(predator) and Paramecium (prey) were used. Paramecium population was grown with sand sediment as hiding place or refuge. To this population, Didiniumwas introduced only once. What […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
How Chlorinated Hydrocarbons Affect Ecosystems: The Role of Biomagnification and Bioaccumulation
Chlorinated hydrocarbons effects ecosystem by (1) Bio magnifications (2) Bio concentration (3) Bio accumulation (4) Bioremediation Chlorinated hydrocarbons, including well-known compounds like DDT and PCBs, are persistent environmental pollutants that […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Why Do Green Plants Persist Despite Heavy Herbivore Pressure? Exploring the Success of Plants on a Green Earth
Nearly 25% of all insect species are known to be herbivores. Yet, in spite of such heavy herbivore pressure, globally green plants tend to persist, contributing to a green earth”. […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
What Is the Limiting Factor for Primary Productivity in Aquatic Ecosystems? Exploring the Role of Nutrients and Light
Generally limiting factor for primary productivity inaquatic ecosystem is (1) Nitrogen (2) Phosphorus (3) Sulphur (4) Carbon Primary productivity in aquatic ecosystems refers to the rate at which energy is […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Plant Vigor Hypothesis: Why Herbivores Prefer Fast-Growing Plants
Which of the following statements is correct according to the plant vigor hypothesis dealing with herbivore- plant interaction? (1) Herbivores prefer to attack slow growing stressed plants which produce leaves […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
What Does NOT Increase in Rivers Due to Sewage Effluents? Understanding the Impact on Water Quality
Increase in amount of the following is NOT a consequence of sewage effluents in river system (1) Microbial load (2) Phosphate level (3) Biological Oxygen Demand (4) Cyanobacterial density Sewage […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
When Do Predators Prefer Smaller Prey? Insights from Optimal Foraging Theory
Consider predators with a choice between two prey types: a big prey 1 which has energy value E1, handling time h1, and search time S1 and; a small prey 2 […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
Ozone’s Dual Role: Why Atmospheric and Stratospheric Ozone Have Opposite Effects on the Biosphere
Correct statement regarding the effect of ozone on biosphere is (1) Both atmospheric and stratospheric ozone is beneficial (2) Both atmospheric and stratospheric ozone is harmful (3) Atmospheric ozone is […]
